❄️ Suitable for freezingJust the Oreo sponges or the final cake decorated with buttercream are suitable for freezing.To freeze the sponges, either wrap them in clingfilm, or place them in an airtight container. I’d suggest placing clingfilm or baking parchment between the layers to ensure they don’t stick together.To freeze the finished cake, either place it into a freezer-safe, airtight container. Or place the finished cake on a freezer-safe dish uncovered (or loosely covered in clingfilm). Once the buttercream is firm (usually after a couple of hours), wrap the cake in clingfilm.If you decide to go down the clingfilm route, when you defrost the cake, make sure you remove the clingfilm while the cake is still frozen. If you try and remove to after it has defrosted you’ll find that the clingfilm will stick to the buttercream and you may end up in a bit of a mess!